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Fluorescence imaging sheds light on the immune evasion mechanisms of hepatic stellate cells mediated by superoxide anion. | LitMetric

Fluorescence imaging sheds light on the immune evasion mechanisms of hepatic stellate cells mediated by superoxide anion.

Commun Biol

College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, China.

Published: May 2024

AI Article Synopsis

Article Abstract

Whether and how the reactive oxygen species generated by hepatic stellate cells (HSCs) promote immune evasion of hepatocellular carcinoma (HCC) remains mysterious. Therefore, investigating the function of superoxide anion (O), the firstly generated reactive oxygen species, during the immune evasion become necessary. In this work, we establish a novel in situ imaging method for visualization of O changes in HSCs based on a new two-photon fluorescence probe TPH. TPH comprises recognition group for O and HSCs targeting peptides. We observe that O in HSCs gradually rose, impairing the infiltration of CD8 T cells in HCC mice. Further studies reveal that the cyclin-dependent kinase 4 is deactivated by O, and then cause the up-regulation of PD-L1. Our work provides molecular insights into HSC-mediated immune evasion of HCC, which may represent potential targets for HCC immunotherapy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11087649PMC
http://dx.doi.org/10.1038/s42003-024-06245-yDOI Listing

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